.keyboard{
  background:#f2f3f5;
  // height: 520px;
  overflow: hidden;
  padding: 8px 9px 15px 9px;
  display: flex;
  
  font-weight: bold;
  .line_part{
    flex: 1;
    margin: 1%;
    text-align: center;
    .key_item{
      height: 100px;
      line-height: 100px;
      margin-bottom: 15px;
      border-radius: 12px;
      background-color: #fff;
      font-size: 44px;
      box-shadow:5px 5px 5px 0px rgba(0,0,0,0.05);
    }
    .key_item3x{
      height: 328px;
      line-height: 328px;
      margin-bottom: 15px;
      border-radius: 12px;
      background-color: #1989fa;
      font-size: 44px;
      box-shadow:5px 5px 5px 0px rgba(0,0,0,0.05);
      color: #fff;
    }
    .key_item:active{
      background: #f2f3f5;
      opacity: 0.7;
    }
    .key_item3x:active{
      background: rgba(86,140,255,1);
      opacity: 0.8;
    }
  }
  .top_key{
    height: 100px;
    line-height: 100px;
    margin-bottom: 15px;
    border-radius: 12px;
    font-size: 44px;
    box-shadow:5px 5px 5px 0px rgba(0,0,0,0.05);
    background: #1989fa;
    color: #fff;
  }
  .top_key:active{
    background: rgba(86,140,255,1);
    opacity: 0.7;
  }
}